fourth class


noun

(in the U.S. Postal Service) the class of mail consisting of merchandise weighing one pound or more, including parcel post and all first-, second-, or third-class matter weighing 8 ounces (227 grams) or more and not sealed against inspection.

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Origin of fourth class

An Americanism dating back to 1860–65

Definition for fourth class (2 of 2)

fourth-class
[ fawrth-klas, -klahs, fohrth- ]
/ ˈfɔrθˈklæs, -ˈklɑs, ˈfoʊrθ- /

adjective

of, relating to, or designated as a class next below third, as for mailing, shipping, etc.

adverb

as fourth-class matter; by fourth-class mail: Send it fourth-class.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for fourth class

British Dictionary definitions for fourth class

fourth-class
/ US /

adjective

of or relating to mail that is carried at the lowest rate

adverb

by fourth-class mail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012